You may be able to shave the seat down even more. Not being able to flatfoot isn't that big of a deal. I'm 5'5" and I can't flatfoot on my xb12r. The only time it sucks is when I'm backing it up, the rest of the time I just shift a cheek off to one side and flat foot on that side(which is usually the left side being how I hold the rear break with my right)